Rabu, 23 Maret 2011

final ccna4-4

1. A small bookstore would like to offer wireless connectivity for customers with laptops. Which wireless components or devices will provide connectivity to the customers with the least possible cost to the bookstore? *standalone access points wireless LAN controllers standalone lightweight access points lightweight access point and wireless LAN controller

2. What can be broadcast over the wireless network to help a user connect to the network and use wireless services? *SSID WEP keys VLAN parameters WPA encryption keys VPN authentication information

3. A company has an IT staff that is not highly trained. What two features or technologies must the network designer identify as training needs in order for the staff to understand the basic operation of VPNs? (Choose two.) access control lists *encryption algorithms Frame Relay configuration QoS operation *tunneling protocols VLAN configuration

4. A large company plans to add several servers and requires that the servers be reachable directly from the Internet. Which action will help the company accomplish this goal? *Assign to each server a static internal IP address that is mapped statically to a public IP address. Place all servers in their own Class C private subnet. Provide a private address to each server using DHCP. Assign addresses from a pool of public Class B addresses using DHCP.

6. During a review of the proposed bill of materials, an account manager of the network solution company realizes that the systems engineer included a switch with lower cost and reduced capabilities for the access layer than was originally specified by the network designer. When questioned, the systems engineer responds that the switches specified by the designer cannot be purchased within the budget limitations of the customer. Which action should the account manager take? Inform the customer that the project budget must be increased. Inform the customer that the project cannot be completed given the unreasonable budget constraints. *Communicate any risks that are associated with the equipment substitution and obtain customer approval to proceed. Because the customer is probably aware that the budget limitations will require lower cost, less capable equipment, the account manager should do nothing.

7. Which protocol is enabled by default to dynamically discover and eliminate Layer 2 loops that are created by redundant links between switches? CDP DTP *STP VTP

8. Which statement describes the use of a network baseline? It creates a high level logical network diagram. *It provides a point of reference for future network evaluations. It allows precise identification of the original location of network equipment. It should be established as soon as a problem is detected on the network.

9. Refer to the exhibit. The network administrator wishes to use the Cisco Feature Navigator to choose a Cisco IOS image to install on a router that will allow VoIP functionality. Based on the output of the show version command, which statement accurately describes the ability of the router to run the Cisco IOS image selected? *There is enough DRAM and flash. There is enough DRAM but not enough flash. There is not enough DRAM but there is enough flash. There is not enough DRAM and flash.

10. What information does an administrator require before saving the running configuration from a router to a TFTP server? router IP address and the name of the configuration file in NVRAM TFTP server IP address and the size of the configuration file in RAM *TFTP server IP address and the name of the configuration file that will be saved router IP address, size of the file and name of the configuration file on the TFTP server TFTP server IP address, the router IP address, and the router interface through which the file will be loaded

11. If a router is unable to find a suitable IOS to load into RAM, in what mode does the boot process end? setup mode user mode *rommon mode privileged mode

13. A WIC-1T module needs to be installed in a Cisco 1841 router that currently has a WIC-2T module in slot 0. What should the network technician do first? Install the hot-swappable option module. *Turn off the power to the router before installing the new module. Remove the WIC-2T module so that the new module can be installed in slot 0. Shut down all Fast Ethernet ports on the router until the new WIC module installation is complete. Configure the Cisco IOS software to support an internal trunk link between the two WIC modules.

14. Refer to the exhibit. An administrator installs a WIC-2T module into a Cisco 1841 router. Attempts to configure the S0/0/0 interface are unsuccessful. As a first step in troubleshooting the failure, the administrator issues the show version command. What is a possible reason for the failure? *The WIC was not physically installed properly. The WIC was installed into slot 1 instead of slot 0. The interface type and number are invalid on an 1841. The configuration register is the wrong value for adding new modules.

15. Which IOS component can be used to classify and monitor network traffic? CDP *NBAR CiscoWorks Network Assistant

18. What is a function of software queuing? filters traffic on the basis of administrator defined rules stores received traffic and sends packets based on the order that the packets are received *sends packets on the basis of priorities that are manually set transmits packets in a priority sequence that is based on source port

19. In a converged network, which two types of traffic would be categorized as real-time traffic? (Choose two.) e-mail file transfer web browsing *videoconferencing *voice over IP video on demand

20. When implementing an IP telephony solution, why should VLANs be used? to allow the use of a single IP gateway *to separate voice from data traffic for ease of prioritization to allow the PBX to use VLAN IDs to filter both voice and data traffic to allow connectivity between traditional phone devices and IP-based telephony devices

21. A school district decides to use the 172.30.0.0/16 network for its LAN networks. The network administrator must create an addressing scheme to support 500 users in the admin office, 200 at the high school, 60 at the elementary school and 28 at the district office. Which VLSM addressing scheme will correctly address the network with minimal waste? 172.30.0.0/20 admin172.30.1.0/21 high school172.30.1.8/22 elementary172.30.1.12/26 district 172.30.0.0/22 admin172.30.4.0/23 high school172.30.5.0/24 elementary172.30.6.0/26 district 172.30.0.0/23 admin172.30.2.0/24 high school172.30.3.0/26 elementary172.30.3.64/27 district* 172.30.0.0/23 admin172.30.2.0/24 high school172.30.3.0/25 elementary172.30.3.127/26 district

22. Refer to the exhibit. The routers are configured with RIPv2 with default configurations. When attempting to communicate with other networks, hosts from 172.16.2.0/24 are experiencing connectivity issues. What could be done to resolve this issue? Change to a public IP address scheme. *Disable automatic route summarization. Change the IP network address on R3 Fa0/0 to 172.16.1.128 /26. Change the subnet mask on the link between R2 and R3 to 255.255.255.0.

26. A network administrator is integrating IPv6 into an IPv4 network by encapsulating one protocol packet within another protocol. Which transition method is being used? dual stack *tunneling proxying and translation NAT with Protocol Translator

27. A network administrator is configuring a router interface with the command R1(config-if)# ipv6 address 2001:DB8:C18:1::/64 eui-64. If the MAC address of this Ethernet interface is 01-1C-70-CF-B4-30, what is the host identifier for this interface under EUI-64 format? 11C:7000:00CF:B430 11C:70FE:FECF:B430 *11C:70FF:FECF:B430 11C:70FF:FFCF:B430

28. Refer to the exhibit. Following a test plan, the network systems engineer completes the configuration of an access layer switch and connects three PCs to test the configuration. The engineer attempts to ping from each PC to the other connected PCs. Which three statements describe the expected results of pinging from one host to another? (Choose three.) Host1 can ping Host2. *Host1 cannot ping Host2. *Host1 can ping Host3. Host1 cannot ping Host3. Host2 can ping Host3. *Host2 cannot ping Host3.

29. Refer to the exhibit. A network associate is configuring a new router to provide routing between VLANs. The associate removes the router from the box and connects the Fa0/0 interface to a trunking port on the switch. After the configuration is applied to the router, the traffic between VLANs still fails. What is causing this to occur? The NWRnStick router needs a routing protocol configured. The NWRnStick router needs additional Fast Ethernet interfaces installed. *The subinterfaces of the NWRnStick router should have IP addresses applied. All the subinterfaces of the NWRnStick router should be configured in the same VLAN.

30. When designing a prototype network for a new server farm, a network designer chooses to use redundant links to connect to the rest of the network. Which business goal will be addressed by this choice? security scalability *availability manageability

31. Refer to the exhibit. A company decides to install a new data center to improve the services available on the network. EIGRP is chosen as a routing protocol. VLAN 100 is the management VLAN. After a prototype network is built, the staff executes basic connectivity tests. The results show very slow convergence after a network failure. Which step should be taken by the engineers to improve the network performance? Eliminate all trunk links in the network. *Configure per-VLAN rapid spanning tree. Configure VLAN 1 as a management VLAN. At the distribution layer, replace EIGRP with RIPv2.

32. Refer to the exhibit. EIGRP has been configured as a routing protocol in the network. Users who are connected on LAN_1 and LAN_2 can ping their default gateways. Users on LAN_1 complain that they are unable to access the resources on the file server that is connected to LAN_2. A technician issues the show ip interface brief command on R1 to verify the status of the interfaces. What information will help the technician troubleshoot the issue? *Interface S0/0/1 line protocol is down. Interface Vlan1 is administratively down. Interface Fa0/1 is missing an IP address. Interface S0/0/0 is configured with an incorrect IP address.

33. Refer to the exhibit. During a test of an EIGRP prototype network, a network administrator issues a show ip protocols command. What two facts can be determined from the output? (Choose two.) The administrative distance is 100. *This router has one adjacent neighbor. There are 10 Cisco devices in this prototype network. The auto-summary command was applied on this router. *EIGRP is using two values for the calculation of the composite metric. EIGRP on this router will display up to four unequal cost routes to the same destination.

34. Refer to the exhibit. A NetworkingCompany designer is reviewing a diagram of a customer network. What two risks or issues can be identified in the topology that is shown? (Choose two.) *The firewall router and ISP connection represent a single point of failure. *A failure of the switch that connects the Cisco Call Manager to the network will cause the entire IP telephony system to fail. Using Layer 3 switches to interconnect the data center servers to the IP phones introduces too much delay. The IP phones need to be redundantly connected to the switches to prevent single points of failure at the access layer. If one of the Layer 3 switches fails, the Cisco Call Manager will be unreachable.

35. On a Monday morning the help desk at a large company receives an unusually high number of calls reporting no connectivity to the Internet or to any other network resources. Otherwise the PCs are functioning normally. Help desk technicians note that all the calls are from a single department, and all affected users are on the same floor of a single building. Where should the help desk technicians suspect that the problem lies? *workgroup switch PC power supplies patch cords from PCs to network jacks cabling from the network jack to the wiring closet

36. Refer to the exhibit. The named ACL "Managers" already exists on the router. What will happen when the network administrator issues the commands that are shown in the exhibit? The commands overwrite the existing Managers ACL. *The commands are added at the end of the existing Managers ACL. The commands are added at the beginning of the existing Managers ACL. The network administrator receives an error that states that the ACL already exists.

38. Refer to the exhibit. An extended ACL has been created to deny traffic from host 192.168.20.254 to the web server with IP address 209.165.201.30. However, host 192.168.20.254 is allowed access to all resources on network 192.168.30.0/24. According to Cisco best practices, where should the ACL be applied? ISP Fa0/0 inbound ISP Fa0/0 outbound ISP S0/0/0 inbound *R2 Fa0/0 inbound R2 Fa0/0 outbound R2 S0/1/0 outbound

39. A company is concerned with protecting internal e-commerce servers against external attacks. An application layer firewall is installed at the network edge and a host-based IDS system is installed on the internal LAN. What should be done to ensure a fast response and minimum server downtime in the event of an external attack? * Replace the host-based IDS with an IPS. Place the e-commerce servers in a DMZ. Install a logging server to monitor all attacks. Replace the application layer firewall with a stateful one.

40. A bank is planning to add a secure, authenticated WAN connection to a rural branch office. The connection must provide bandwidth of up to 10 Mb/s with QoS supporting VoIP. Which WAN connection type should the network designer recommend? DSL ISDN *leased line Frame Relay

41. While configuring EIGRP on a router, the technician enters this command:

Router(config-router)# variance 8

What is the effect of entering this command? It adjusts the cost of all EIGRP routes to 8. *It enables unequal cost load balancing on the router. It restricts the number of EIGRP feasible successor routes to 8. It enables EIGRP equal cost load balancing over a maximum of 8 routes. It modifies the number of values used in the composite metric calculation.

42. A designer is creating a test plan to validate a WAN design that is based on Frame Relay technology. Which network device can be used in the prototype network to serve as a Frame Relay switch? DSLAM CSU/DSU Cisco 2950 switch *Cisco router with appropriate IOS

43. Refer to the exhibit. A pre-sales systems engineer receives a diagram of the exhibited WAN implementation from a customer. EIGRP is the routing protocol that is used on the WAN. None of the parameters for EIGRP metric calculation have been modified in any router configurations. Which statement is true about the routing table on router RM? There is a single route to the 192.168.24.0/24 LAN using the T1 connection. There is a single route to the 192.168.24.0/24 LAN using the DSL connection. *There is a single route to the 192.168.24.0/24 LAN using the Metro Ethernet connection. EIGRP installs all three routes to the 192.168.24.0/24 LAN and load balances the traffic.

44. When implementing a security policy, which two actions should be included as part of the security checklist? (Choose two.) Disable all logging. Enable Telnet on TCP port 23. Use HTTP for web administration. *Set timeouts and ACLs on VTY lines. *Shut down any unused ports and interfaces.

45. A network administrator has configured Frame Relay on a serial interface and issued the show interfaces serial command. The output shows that the interface is up and the line protocol is up. However, pings to the remote router across the link fail. What should the next step be to ensure that the IP address of the remote router appears in the Frame Relay map table of the local router? Configure the router using the no inverse-arp command. Ensure that the LMI type is correct for the circuit. *Configure the router using the frame-relay map ip command. Verify that the remote router has Frame Relay encapsulation enabled.

46. Refer to the exhibit. A NetworkingCompany engineer is characterizing an existing network for a new customer. The engineer issues a show running-config command on the branch router to gather configuration information. What is the engineer able to determine as a result of viewing the output of this command? The branch office router has two routes to the main office LANs in the routing table. The default route for the branch office traffic is the serial link to the Edge2 router. *A connection through ISP-A will be used to reach the main office LANs if the Frame Relay network is unavailable. By using both the DSL and the Frame Relay connection, the branch office router will load balance traffic that is destined for the main office LANs.

47. Refer to the exhibit. What can be determined about the operation of DLCI 101? It is shut down. Traffic flows in only one direction. Packet size is limited to 2000 bytes. *The Frame Relay network is experiencing congestion. All packets moving across the link are marked as discard eligible.

48. A company establishes a Frame Relay connection between corporate headquarters and a branch office. The CIR for the connection is set at 4 Mb/s. Which statement is true about this WAN connection? The company will not be able to send data faster than 4 Mb/s. *If the company sends data faster than 4 Mb/s, some of the data frames will be flagged with a DE bit. If the company sends data faster than 4 Mb/s, the TSP will change the CIR to zero. When the company sends data faster than 4 Mb/s, the Frame Relay switch will set the BECN bit to 1 on the frames that are headed to the company.

49. The main office of a NetworkingCompany customer currently connects to three branch offices via three separate point-to-point T1 circuits. The customer network uses RIPv2 as the routing protocol within both the LAN and the WAN. The account manager proposes a change to a Frame Relay network because the costs are lower. A single local loop connection can be installed at the main office with three separate PVCs to connect the branch offices. How can the main office edge router be configured to enable the customer to continue to use RIP as the WAN routing protocol? Enable Inverse ARP on the serial interface in order to learn the routes to the IP addresses of the remote routers. To prevent the Frame Relay network from causing a routing loop, disable split horizon on the serial interface. *Create three separate point-to-point subinterfaces on the serial interface and assign a different subnet IP address to each one. Configure the serial interface with a single interface DLCI number and create frame-relay map statements for each remote site address.

50. What type of Frame Relay subinterface must be used to connect remote sites without having to disable split horizon? multipoint multiaccess *point-to-point nonbroadcast multiaccess